DISPLAY DEVICE

• US 20170005083A1
• Filed: 07/01/2016
• Published: 01/05/2017
• Est. Priority Date: 07/03/2015
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: HEO, SeoungUk, CHOI, Jaewoong, NAM, SungLim, CHOI, WonJun, PARK, Misun, KONG, Younghyun
• Granted Patent: US 9,947,652 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/13332 Front frames
• CPC Class Codes: G02F 1/13336 Combining plural substrates to produce large-area displays, e.g. tiled displays
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/13458 Terminal pads
• CPC Class Codes: G02F 1/136204 Arrangements to prevent high voltage or static electricity failures
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G02F 2202/22 Antistatic materials or arrangements
• CPC Class Codes: H01L 23/60 Protection against electrostatic charges or discharges, e.g. Faraday shields
• CPC Class Codes: H01L 27/0292 using a specific configuration of the conducting means connecting the protective devices, e.g. ESD buses
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

A structure of connecting a panel driver to a side of a display panel and an electrostatic discharge (ESD) structure are discussed. The display device comprises a display panel including an active area where an image is displayed and a pad area corresponding to a non-display area, the display device comprising a first substrate and a second substrate which face each other and are bonded to each other to constitute the display panel. A signal pad is arranged on the first substrate, and a connection electrode is connected with one side of the signal pad. A flexible circuit film connected with the connection electrode is arranged. In this case, the signal pad includes a plurality of lines arranged by interposing an insulating film therebetween, wherein the plurality of lines are electrically connected with each other.

Claims

1. A display device comprising a display panel including an active area where an image is displayed and a pad area corresponding to a non-display area, the display device comprising:

a first substrate and a second substrate, which face each other and are bonded to each other to constitute the display panel;

a signal pad arranged on the first substrate;

a connection electrode connected with one side of the signal pad; and

a flexible circuit film connected with the connection electrode,

wherein the signal pad includes a plurality of lines arranged by interposing an insulating film therebetween, and the plurality of lines are electrically connected with each other.

2. The display device of claim 1, wherein the plurality of lines include at least two lines of a first line arranged on the same layer as a gate line arranged in the active area, a second line arranged on the same layer as a data line arranged in the active area, and a third line arranged on the same layer as a pixel electrode arranged in the active area.

3. The display device of claim 2, wherein the plurality of lines includes the first line, the second line and the third line, wherein a first insulating film is arranged between the first line and the second line, the first line and the second line are electrically connected with each other through a first contact hole, a second insulating film is arranged between the second line and the third line, and the second line and the third line are electrically connected with each other through a second contact hole.

4. The display device of claim 3, wherein the connection electrode is arranged at a side of the first substrate and a side of the second substrate.

5. The display device of claim 4, wherein the first line and the second line are electrically connected with the connection electrode at one side of each of the first substrate and the second substrate.

6. The display device of claim 4, wherein the first line and the third line are electrically connected with the connection electrode at one side of each of the first substrate and the second substrate.

7. The display device of claim 4, wherein the second line and the third line are electrically connected with the connection electrode at one side of each of the first substrate and the second substrate.

8. The display device of claim 4, wherein the first line, the second line and the third line are electrically connected with the connection electrode at one side of each of the first substrate and the second substrate.

9. The display device of claim 4, wherein the flexible circuit film is arranged at the side of the first substrate and the side of the second substrate by an adhesive layer.

10. The display device of claim 9, further comprising:

an electrostatic discharge layer arranged on the second substrate; and

a plurality of ground electrodes electrically connected with the electrostatic discharge layer and arranged at the side of the first substrate and the side of the second substrate.

11. The display device of claim 10, further comprising:

a metal frame on which the first substrate and the second substrate are mounted; and

a conductive light-shielding portion arranged to cover the plurality of ground electrodes, the side of the first substrate and the side of the second substrate, wherein the conductive light-shielding portion is attached to an external sidewall of the metal frame and therefore the plurality of ground electrodes are electrically connected with the metal frame.

12. The display device of claim 11, wherein the conductive light-shielding portion includes a conductive adhesive layer attached to the outer sidewall of the metal frame and the plurality of ground electrodes, a metal film arranged on the conductive adhesive layer, and a light-shielding film arranged on the metal film, and is arranged to cover the flexible circuit film.